import java.util.Scanner;

public class iftest2 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.println("请判断路灯:红(1)/绿(0)/黄(2)");

        int a = sc.nextInt();

        if(a==1){
            System.out.println("stop!");
        }
        else if (a==0){
            System.out.println("gogogo!");
        }else if (a==2){
            System.out.println("slow!");
        }else{
            System.out.println("输入错误!");
        }
    }
}
